Combat 2014 Wanted -11 Fastpitch Bat Combat's two-piece bats have all the advantages of a two-piece model without any of the disadvantages other competitors face. The design is centered on Combat's exclusive Handle Isolation Technology (HIT). HIT uses polymetric visco-elastic dampened to isolate the ultra-light handle from the high performance double-wall barrel. This exclusive material stiffens under load so the barrel responds quickly to your swing, but then softens to absorb vibration feedback, eliminating vibrations before they reach your hands.